65 lines
1.6 KiB
JavaScript
65 lines
1.6 KiB
JavaScript
var readline = require('readline')
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var Promise = require('any-promise')
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var objectAssign = require('object-assign')
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var Interface = readline.Interface
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function wrapCompleter (completer) {
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if (completer.length === 2) return completer
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return function (line, cb) {
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var result = completer(line)
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if (typeof result.then !== 'function') {
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return cb(null, result)
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}
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result.catch(cb).then(function (result) {
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process.nextTick(function () { cb(null, result) })
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})
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}
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}
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function InterfaceAsPromised (input, output, completer, terminal) {
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if (arguments.length === 1) {
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var options = input
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if (typeof options.completer === 'function') {
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options = objectAssign({}, options, {
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completer: wrapCompleter(options.completer)
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})
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}
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Interface.call(this, options)
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} else {
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if (typeof completer === 'function') {
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completer = wrapCompleter(completer)
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}
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Interface.call(this, input, output, completer, terminal)
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}
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}
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InterfaceAsPromised.prototype = Object.create(Interface.prototype)
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InterfaceAsPromised.prototype.question = function (question, callback) {
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if (typeof callback === 'function') {
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return Interface.prototype.question.call(this, question, callback)
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}
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var self = this
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return new Promise(function (resolve) {
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Interface.prototype.question.call(self, question, resolve)
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})
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}
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objectAssign(exports, readline, {
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Interface: InterfaceAsPromised,
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createInterface: function (input, output, completer, terminal) {
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if (arguments.length === 1) {
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return new InterfaceAsPromised(input)
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}
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return new InterfaceAsPromised(input, output, completer, terminal)
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}
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})
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